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    • 5. 发明授权
    • Reverse progressive lenses
    • 反向渐进镜片
    • US07832861B1
    • 2010-11-16
    • US12647720
    • 2009-12-28
    • Patrick Lee
    • Patrick Lee
    • G02C7/06
    • G02C7/066G02C7/061
    • A method of making a reverse progressive lens has the steps of selecting a standard progressive lens having a distance zone, a transition zone and a near zone; selecting an add determination that is double or more than double in power; reversing the regular progressive lens by orienting it upside down; and cutting away the near zone so that the transition zone becomes the new near zone. To maintain convergence of the corridor channel, one by orders the OS lens with the OD power and the OD lens with the OS power. The method also includes measuring a distance PD, measuring the segment height and keeping the same cylinder axis such that rotating the lens 180° does not change the axis position. Selecting a standard progressive lens may include one with a distance zone, a corridor/transition zone and a near zone.
    • 制造反转渐变镜的方法具有选择具有距离区域,过渡区域和近区域的标准渐进镜片的步骤; 选择一次加倍或两倍以上的加法确定; 通过将正则渐进镜片反向定向倒转; 并切割近区,使过渡区成为新的近区。 为了保持走廊通道的收敛,可以通过OD功率命令OS镜头和OS功率的OD镜头。 该方法还包括测量距离PD,测量段高度并保持相同的气缸轴线,使得旋转镜片180°不改变轴位置。 选择标准渐进镜片可以包括具有距离区域,走廊/过渡区域和近区域的渐变镜头。